[1]蔣國權,肖建韓.連續重整脫戊烷塔頂空冷器銨鹽結晶消減措施[J].石油管材與儀器,2020,6(03):87-90.[doi:10.19459/j.cnki.61-1500/te.2020.03.022]
 JIANG Guoquan,XIAO Jianhan.Reduction Measures on Ammonium Salt Crystallization of the Depentanizer Air Cooler in Continuous Reforming Unit[J].Petroleum Tubular Goods & Instruments,2020,6(03):87-90.[doi:10.19459/j.cnki.61-1500/te.2020.03.022]
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連續重整脫戊烷塔頂空冷器銨鹽結晶消減措施
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《石油管材與儀器》[ISSN:2096-0077/CN:61-1500/TE]

卷:
6
期數:
2020年03期
頁碼:
87-90
欄目:
經驗交流
出版日期:
2020-06-20

文章信息/Info

Title:
Reduction Measures on Ammonium Salt Crystallization of the Depentanizer Air Cooler in Continuous Reforming Unit
文章編號:
2096-0077(2020)03--0087-04
作者:
蔣國權肖建韓
中石油云南石化有限公司 云南 昆明 650300
Author(s):
JIANG Guoquan XIAO Jianhan
PetroChina Yunnan Petrochemical Co. Ltd., Kunming, Yunnan 650300, China
關鍵詞:
脫戊烷塔銨鹽結晶腐蝕消減措施
Keywords:
depentanizer ammonium salt crystallization corrosion reduction measures
分類號:
TE986
DOI:
10.19459/j.cnki.61-1500/te.2020.03.022
文獻標志碼:
A
摘要:
連續重整脫戊烷塔頂低溫部位腐蝕已成為制約裝置長周期運行的關鍵因素之一,尤其是塔頂空冷器銨鹽結晶腐蝕,造成空冷器前后壓差升高,導致脫戊烷塔操作絮亂,回流量、塔頂壓力、冷后溫度、回流罐壓力等工藝操作參數變化明顯。為降低脫戊烷頂空冷器壓差,消除銨鹽結晶隱患,通過提高脫戊烷塔頂溫度分解NH4Cl,采取在線注水沖洗緩解塔頂銨鹽結晶腐蝕,并強化重整進料質量管理、生成油脫氯劑使用管理及增加脫戊烷塔頂防護來加強源頭控制。通過以上措施能有效消減脫戊烷塔空冷器銨鹽結晶,確保裝置長周期安全平穩運行。
Abstract:
The low temperature part corrosion of the depentanizer has become one of the pivotal factors restricting longterm operation of the continuous reforming unit. Especially, the ammonium salt crystallization corrosion of air cooler at the top of the depentanizer will lead to an increase in differentialpressure before and after air cooling, resulting in significant variation of the depentanizer process parameters such as return flow, tower top pressure, post cooling temperature, and reflux tank pressure. In order to reduce the differentialpressure and eliminate the hidden hazard of ammonium salt crystallization, NH4Cl was decomposed by increasing the temperature at top of the depentanizer tower, the crystallization corrosion of the tower was alleviated by online water injection flushing, and the quality management of the feedstock, the use of dechlorination agent for catalytic reformate oil and the corrosion protection were optimized to strengthen the source control. The above measures can effectively reduce the ammonium salt crystallization of the air cooler at the top of the depentanizer tower, and ensure safe and stable operation of the unit in a long period.

參考文獻/References:

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備注/Memo

備注/Memo:
第一作者簡介:蔣國權,男,1984年生,2008年畢業于中國石油大學 (華東)化學工程與工藝專業, 主要從事石油煉制技術管理方面的工作。E-mail:[email protected]
更新日期/Last Update: 2020-06-25
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